Varest and content type

Hi,

Because i’m french and i use a lot of accent : à é è… i always have problems to get text from the web. But i tried Varest plugin and it work ! … with wikipedia.
I don’t know why but every time i tried getting text on Wikipedia i had problems. But now it work with Varest ! I said : cool ! Varest is great. all my é,è,à print correctly !

But when i try the same code with anothe URL like simple google search : all my é, è, à are remplaced by “?”
So Varest work fine with Wikipedia now, but not with some other website ?

(my request is a simple xxx_application_form_url with GET)

Why it work for one website and not all website ? How can i resolve that problem ?